Method for detecting failures of random access procedures

H - Electricity – 04 – W

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H04W 74/08 (2009.01) H04W 24/00 (2009.01) H04B 7/26 (2006.01)

Patent

CA 2725771

A method of performing a random access channel (RACH) procedure between a mobile terminal and a network includes the steps of detecting whether a random access response (RAR) is received from the network within a certain time period, the RAR including information about a random access channel (RACH) preamble transmitted to the network; and if the RAR is not received within the certain time period or if the information about the transmitted RACH preamble included in the RAR does not match the transmitted RACH preamble, performing a first procedure to detect failures in the RACH procedure; and if the RAR is received within the certain time period and if the information about the transmitted RACH preamble included in the RAR matches the transmitted RACH preamble, performing a second procedure to detect failures in the RACH procedure.

Procédé d'exécution d'une procédure pour canal d'accès aléatoire (RACH) entre un terminal mobile et un réseau. Ce procédé comprend les opérations suivantes: détection permettant de savoir si une réponse d'accès aléatoire (RAR) renfermant des informations sur un canal d'accès aléatoire (RACH) est reçue du réseau dans un certain laps de temps, et sinon, ou bien si l'information que contient cette réponse RAR sur le préambule RACH transmis n'est pas conforme au préambule RACH transmis, exécution d'une première procédure visant à de détecter des défaillances dans la procédure RACH; si la réponse d'accès aléatoire (RAR) est reçue du réseau dans un certain laps de temps et si l'information que contient cette réponse RAR sur le préambule RACH transmis est conforme au préambule RACH transmis, application de la seconde procédure pour détecter des défaillances dans la procédure RACH.

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